Improvement in padlocks



Inventar.

MM, MM

N. PETERS. PHCTD-LITHQGRAPKER. WASHINGTON D C naar gaat' ANDY M. ADAMS, OF WASHINGTON, DISTRICT OF COLUMBIA.

Letters Patent No. 101,808, dated April 12, 1870.

IMPROVEMENT -IN PADLocKs.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern:

Be it known that I, ANDY M. ADAMS, of Washington city, District of Columbia, have invented a new and useful Single-spring, Self-fastening Lock;Y

and I do hereby declarethe following to be a full and exact description thereof, reference being had to the accompanying drawing making part of this specification, in which Figure 1 represents theback and rim of the lock; I

Figure 2, the lower stay of the locking-bolt; Figure 3, `the dog, by means .of which the key opens the lock;

Figure` 4 represents the lock open, and the top and interior plates removed, so as to show the parts;

Figure 5, the locking-bolt;

Figure 6, the tumbler of the locking-bolt;

Figure 7, the interior plate;

Figure 8, a strong, metal, arc-shaped bolt, extending around nearly the. entire interior of the lock, and. by means of which the hasp is thrown outI of the' lockl and the locking-bolt D held back while the hasp .is ont,and held forward while in; to the back of this bolt is attached the spring H, the office of which will be described` fully hereafter;

Figure 9represents the lock when closed; and

Figure 10 represents the key of the lock.

Similar letters of reference indicate corresponding parts in all the figures.

A is the back of the lock;

'B, the lower stay of the locking-bolt D; and

b b are its lower guides.

C is the dog, by means of which the stay` B is pressed down so as to clear the locking-bolt D, on its being thrown back by the key;

c is the pillar of the lock, and also the pinion of the dog C;

D is the locking-bolt; and

d d', the guides forming its channel.

E is a tumbler pivoted to the locking-bolt.

F is the linterior plate, which covers thel dog C, forms the upper guide for the lower stay B, and fills the center ward of the key.

G is the arc-shaped bolt, described before as fig. 8. His the mainspn'ng, which is attached at one end to the bolt G, and by means of which said bolt is op- -erated and the hasp thrown out'of the lock.

h is .an extension of the spring H, by means of which the underl stay B is driven up when the locking-bolt D is moved forward.

J isthe hasp, and

j, its catch.v

K is the key.

My invention consists in a single-spring, self-fait euing lock, the parts of which are few and simple, yet novel and strong, and so constructed and arranged as to offer perfect security against all attempts to open it otherwise than with a key made as herein shown.

The operation of fastening my lock is as follows:

The hasp J, ou being pressed downl into the lock, strikes the table-end g of the bolt G,- thereby sliding it down on the pivot g1, compressing the mainspring H and freeing the front end cl4 of the locking-bolt D,

'while the end g2 of the bolt G forces forward the locking-bolt D in its channel until it enters the catch j in the hasp J. Thisaction pelmits the rising of the lower stay-bolt' B, by means of the spring h, up

into the recess d2 of the looking-bolt D, thereby bolting it into the catch j in the hasp J. This action also throws the end e of the tumbler E up into therecess el in the upper or straight portion of the rim of the lock, and the recess cz in its other end over the tooth e3 in the side of the table-end g of the bolt G..

By this operation it will be seen that the lockingbolt D is held or looked in the catch j of the hasp J, first, by the under stay B 'passing up into its recess d2,- second, by the end g of the bolt G pressing against its end; and, third, by the spur e of the tumbler E passing into the recess el in the upper rim of the lock.

It will be noticed that the under side of the bolt G is cut away to admit the spring h passing under it, and that-the under side of the under stay B is also cut away, so as to admit of the passage of' the same spring under it, and to form a shoulder `on it for the the said spring to rest against.

The operation of'opening the lock is as follows:

The key is .pushed down in the lock until its toe is passed in under the interior plate F, when the key is turned to the right, which causes its toe to strike thelshoulder c ofthe dog C, and turns it down on the shoulder of the under stay B. the shoulder of the key stiikes the tumbler E', lifting one end of it off the tooth e3 in the table-end g of the bolt G, and the other end down out of the recess el in the rim of the lock, thus freeing the locking-bolt D, which, when freed, is drivenback out of the catch j of the hasp J, by means of the lower half o f the shoulder of the key pressing against the tail ll of' the locking-bolt. The hasp J, being-thus freed, is thrown up out of the lock by means of the mainspring H shooting up the table-end g of the holt G into the it, by means of the tooth e, one end of the tumbler E, while the other end. is throwndown overthe shoul- The upper half of der of the guide d, and thus prevents the lockingbclt D being shot out by any sudden jolt given to the lock, suchas a fall, 85e.

2. The tumbler E, formed as shown, and operating in connection with the bolts D and G and the recess 1 el, in the manner and for the purpose herein described.

3. The locking-bolt D, under stay B, dog C, and guides b b' and d d', combined and operating in the manner and. for the purpose herein set forth and Adescribed.

In testimony that I claim the foregoing lock as my invention, I have hereunto set my hand, this 22d day of January, 1870.

A. M. ADAMS.

Vitnesses GEORGE W. MCGI'LL,* A. H. JACKSON. 

